FI72791C - Device for connecting pipes. - Google Patents

Description

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jQ§3fjp W <11) utlAggningsskrift ΊλΊ9 \ C (* $) Γ f:. ' *; i .7. · „Iy l -Jf ± r γί. i. _ ,, u. Λ i .. i ϊ- X Q ^ ^ 1 o * y v (51) Ky.lk//lnt.CI.4 F 16 L 21/02 g y q | ^ | I p | N LAN D (21) Patent application - Patentansöknlng 8 01 4 09 (22) Application line - Ansöknlngsdag 3 0.0 4.8 0 (EN) (23) Start date - Giltighetsdag 3 0.0 4.8 0 (41) Published public - Blivit offentlig 05.11 .80

National Board of Patents and Registration of Finland Date of display and publication——} 1 03.87

Patent · och registerstyrelsen '' Ansdkan utlagd och utl.ikriften publlcerad (86) Kv. application - Int. ansökan (32) (33) (31) Privilege claimed - Begärd priority 04.05.79

Belgium (Belgium) 194985 (71) (72) Kurt Sture Birger Ericson, 48 Prins Boudewijn 1 aan, Schilde,

This invention relates to devices for joining pipes or tubes to elements, such as frames or tubular bodies, used in automatic systems. in valves or other devices, eg valves in sewage pipes.

In such a device, pipelines for different substances (gases, liquids or mixtures) and purposes are constructed to transport these substances in different quantities and at different capacities in the same structure or plant.

In this case, pipes with different dimensions (diameters) are used. In order to make the connections between the pipes, a large number of pieces corresponding to different diameters are required.

The object of the invention is to enable the connection of any pipe with a cross-section or a tubular member of a certain size or a certain diameter to pipes or elements of different sizes or 2,72791 different diameters using a very simple means, so as to obtain a completely general type of connection. At the same time, an absolutely effective tightness and perfect control of the elements to be connected is achieved.

For this purpose, the device according to the invention comprises a sleeve which is a flexible material and the inner circumference of which has a sealing film formed by a flange or a dome. Said device is essentially characterized in that said pieces consist of a series of rings of different sizes, which are kept cohesive with respect to each other by means of cross-pieces and that the outermost ring is connected to the sleeve by arms.

In a practical embodiment of the invention, the guide means may be a series of rings of different sizes or diameters, which are kept coaxial with each other by means of cross-pieces, the outer ring of the centering body being connected by a retaining ring generally placed in a groove inside the sleeve.

In the accompanying drawings, Fig. 1 is a cross-sectional view showing an example of a connecting sleeve with a guide piece, Fig. 2 is a plan view showing a guide or centering piece for a pipe having a diameter smaller than the diameter of the sleeve, and Figs.

Figure 1 shows a connecting piece consisting of a sleeve or a body 1, the inner and outer walls of which are shown in the example with annular brushes 2-3.

This piece is a homogeneous flexible material, usually plastic.

Inside the body or sleeve 1 there is a flexible membrane 4 consisting of a flange connected at its end to the inner wall of the sleeve 1 and extending towards the longitudinal axis of the sleeve 1 leaving a central opening 5.

As shown by the dashed lines in Figure 1, this membrane allows the placement of tubes with different diameters (D 1, D 2, D 2) smaller than the inner diameter of the sleeve 1 in the inner part of the sleeve 1.

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Whatever the diameter of the inserted tube, the flange 4 deforms and provides a seal with the inserted tube.

It is clear that the diameters D] _, 02 »can have any dimensions.

The sleeve 1 itself can be placed inside a larger diameter pipe. In this case, the teeth 3 on the surface of the sleeve provide a tightness.

The sleeve 1 can also be pushed onto a smaller diameter pipe, whereby the inner brushes 2 act as sealing rings.

However, this push is limited by a flange 4 located substantially in the middle of the sleeve 1.

Thanks to the ring brushes 2, 3, sealing joints can be made, taking into account the tolerances and variations of different standards (ASTH, SIS, ISO, etc.).

In order to obtain an effective sealing connection between the flange 4 and the smaller diameter pipe, a control means is used according to the invention for holding the pipe in the axial position in the sleeve 1.

In the case of Fig. 1, which shows a connection between pipes, a part or piece 6 is used, consisting of a series of different guide rings 7, 8,9 having different diameters and kept coaxial with each other by means of cross-pieces 10 connected to these rings. The outer ring 9 is connected by holders 11 to a fastening ring 12 located in a groove inside the sleeve.

It is easy to see that if the ring with the smallest diameter 7 is removed with the corresponding cross pieces 10, a tube with a larger diameter (D2) can be inserted, which is guided by a ring 8 with a larger diameter.

If a pipe with a diameter D2 is placed in the device, 4 72791 the flange 4 provides a tightness. If the tube is pushed a little further, it is guided by a ring 8 corresponding to the diameter D2.

The flange 4 may have small annular protrusions 14 inside and outside to improve the tightness of the pipe to be connected.

An important feature is that for receiving the centering piece 6, there can be a groove 13 on each side of the flange, which allows the guide piece 6 to be placed in two different positions and thus inside the tube from either direction (F or F-1).

It is found that the invention achieves an absolutely perfect connection thanks to the sealing parts themselves and their control.

Such a connection can be considered as a general connection in the device shown in Fig. 1, which comprises a sleeve 1 with ring brushes 2, 3 and a flange 4, whatever the diameters.

Figures 3 and 4 show a joint between pipes of different diameters and a tubular body 15, which may have any cross-section (round, polygonal, etc.) and which is part of any plant.

A connecting piece 21 made according to the same principles is used, with ring brushes 22 inside and / or ring brushes 23 on the outside and a flange 24.

In this case, the centering of the inner tubes is achieved by using axial projections 16 (six in the example) on the inner circumference of the tubular body, each comprising a stepped portion 17 for receiving tubes of different diameters.

The connection devices according to Figures 3 and 4 can advantageously be used in automatic valve devices for sanitary installations for the removal of waste water, e.g.

Claims (4)

5 72791 A device for connecting tubular elements of different sizes to each other, comprising a sleeve (1) of flexible material, the inner circumference of which has a lip-like sealing membrane (4) and a guide or centering piece (6) for pushing the tubular elements together, characterized in that said the pieces (6) consist of a series of rings (7, 8, 9) of different sizes, which are kept concentric with each other by means of cross-pieces (10) and that the outer ring (9) is connected to the sleeve (1) by arms (11). Device according to claim 1, characterized in that said arms (11) are connected to a fastening ring (12) arranged in a groove (13) on the inner surface of the sleeve (1). Device according to claim 2, characterized in that it has a groove (13) on both sides of the sealing membrane (4) for setting the centering pieces (6), allowing the pieces (6) to be placed in two different positions and tubular elements to be inserted from either direction. Device according to one of the preceding claims, characterized in that the circumference of the inner wall and / or the outer wall of the sleeve (1) has annular brushes (2, 3) so that when the sleeve (1) is used in connection with a larger or smaller pipe, these brushes ( 2, 3) sealing price.